Laminating device for membrane electrode packaging and fuel cell production system

Abstract

The utility model provides a laminating device for membrane electrode packaging and a fuel cell production system, and belongs to the technical field of fuel cell manufacturing. The laminating device for membrane electrode packaging comprises a laminating assembly, a frame unwinding assembly and a driving assembly, the laminating assembly comprises a steel roller and a rubber roller which are oppositely distributed, and a gap for a membrane material to pass through is formed between the steel roller and the rubber roller; the frame unwinding assembly is located on the upstream of the steel roller and used for conveying the frame to the gap through the steel roller to be attached to the base material. The driving assembly is in driving connection with the laminating assembly, so that the steel roller and the rubber roller can be close to each other or far away from each other, and the laminating device for membrane electrode packaging can effectively solve the problems that the flatness is poor and bubbles exist after the frame and the membrane electrode are laminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell manufacturing, in particular to a laminating device for membrane electrode packaging and a fuel cell production system. BACKGROUND

[0002] In the prior art, a frame is usually arranged on the surface of a membrane electrode by using a roll-to-roll laminating process, and a laminating device for membrane electrode packaging is needed to laminate the frame and the membrane electrode together by means of roller pressing. However, in the laminating process of the membrane electrode, the middle part of the membrane electrode product has a cavity, and when passing through the laminating roller, the gas in the cavity is more likely to be squeezed to the edge, thereby generating bubbles or leaving marks after the bubbles are squeezed out. The existing laminating device has a poor structure design, and the laminated product has the problems of poor flatness and bubbles. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a laminating device for membrane electrode packaging and a fuel cell production system, which can effectively improve the problems of poor flatness and bubbles after laminating the frame and the membrane electrode.

[0004] The embodiments of the present application are implemented as follows:

[0005] In a first aspect, the embodiments of the present application provide a laminating device for membrane electrode packaging, which comprises a laminating assembly, a frame unwinding assembly and a driving assembly. The laminating assembly comprises oppositely distributed steel rollers and rubber rollers, and has a gap for passing a membrane material between the steel rollers and the rubber rollers. The frame unwinding assembly is located upstream of the steel rollers and is used to transport the frame to the laminating gap through the steel rollers for laminating with the membrane material. The driving assembly is drivingly connected with the laminating assembly to enable the steel rollers and the rubber rollers to approach or move away from each other.

[0006] In the above technical solution, on the one hand, the frame unwinding assembly is arranged upstream of the steel rollers to transport the frame to the laminating gap through the steel rollers. Since the steel rollers have high hardness and flatness, they can better support and assist in flattening the frame during the transmission process, thereby obtaining a product with high flatness after laminating. On the other hand, the driving assembly is drivingly connected with the laminating assembly to enable the steel rollers and the rubber rollers to approach or move away from each other, i.e. to flexibly adjust the size of the gap between the steel rollers and the rubber rollers, so as to flexibly adjust the pressure when laminating the frame and the membrane electrode, thereby reducing the probability of generating bubbles during the laminating process of the frame and the membrane electrode (since the frame is relatively thin, it is sensitive to the pressure during laminating, and improper application of laminating pressure can easily generate bubbles). Through the improvements in the two aspects, the laminating device for membrane electrode packaging can effectively improve the problems of poor flatness and bubbles after laminating the frame and the membrane electrode.

[0007] In some alternative implementations, the wrap angle of the frame on the steel roller is 45 to 140°.

[0008] In the above technical solution, the adjustable range of the wrap angle of the frame on the steel roller is large (specifically, the wrap angle can be an acute angle, a right angle, or an obtuse angle), which can provide more possible solutions, thereby facilitating the promotion and application of the technical solution of this application.

[0009] In some alternative implementations, the wrap angle of the frame on the steel roller is 100 to 140°.

[0010] In the above technical solution, the wrap angle of the frame on the steel roller is an obtuse angle, which can better support and flatten the frame during the conveying process, so as to obtain a film product with higher flatness after lamination.

[0011] In some alternative implementations, the steel roller and the rubber roller are distributed opposite each other in a vertical direction, with the steel roller positioned above the rubber roller.

[0012] In the above technical solution, the bonding component is set vertically and the steel roller is placed on top, which has the advantages of a more reasonable layout and convenient conveying of the frame and base film.

[0013] In some alternative implementations, the drive assembly and the steel roller are driven together and configured to drive the steel roller close to or near the rubber roller.

[0014] In the above technical solution, when the steel roller is placed above the rubber roller, the drive assembly is connected to the steel roller drive to adjust the gap between the steel roller and the rubber roller, which has the advantage of facilitating device assembly and operation.

[0015] In some alternative implementations, the two ends of the steel roller are each driven to be connected to a drive assembly along the axial direction of the roller.

[0016] In the above technical solution, drive components are provided at both ends of the steel roller in the axial direction, so that the steel roller is subjected to more balanced force, which helps to improve the overall stability of the device.

[0017] In some alternative implementations, the drive assembly includes a threaded rod, a support block, a bearing, and a bearing housing. The threaded rod passes through and is threadedly connected to the support block. The support block is supported by a base to support the threaded rod. The bearing is housed within the bearing housing. One end of the threaded rod passing through the support block is rotatably connected to the bearing housing via the bearing. The end of the bearing housing opposite to the threaded rod is connected to the steel roller.

[0018] In the above technical solution, the drive assembly includes a threaded rod, a support block, a bearing, and a bearing housing. Specifically, the threaded rod passes through the support block and is threadedly connected to it. The support block is supported by a base to support the threaded rod. The bearing is housed in the bearing housing. One end of the threaded rod passing through the support block is rotatably connected to the bearing housing via the bearing. The end of the bearing housing opposite to the threaded rod is connected to the steel roller. That is, the threaded rod, the bearing housing, and the steel roller are integrated into one unit, allowing the bearing housing and the steel roller to rise or fall when the threaded rod and the support block rotate relative to each other, thereby adjusting the gap between the steel roller and the rubber roller. This screw-like drive method has the advantage of high adjustment sensitivity. At the same time, compared with drive methods such as motors, it also has the advantage of lower cost.

[0019] In some alternative implementations, an adjusting block is provided at the end of the threaded rod away from the bearing housing along its axial direction, and the orthographic projection of the threaded rod is located within the orthographic projection of the adjusting block.

[0020] In the above technical solution, an adjustment block with a large cross-sectional size is provided at the end of the threaded rod away from the bearing seat, which has the advantage of being easier to operate compared to directly rotating the threaded rod.

[0021] In some alternative implementations, the bearing housing is detachably connected to the steel roller.

[0022] In the above technical solution, the bearing housing and the steel roller are connected in a detachable manner, which has the advantage of facilitating the inspection and replacement of parts.

[0023] Secondly, embodiments of this application provide a fuel cell production system, including a bonding device for membrane electrode encapsulation as provided in the first aspect embodiment.

[0024] In the above technical solution, the fuel cell production system includes a bonding device for membrane electrode packaging as provided in the first aspect embodiment. On the one hand, the frame unwinding assembly and the steel roller cooperate to help flatten the frame during the frame conveying process. On the other hand, the drive assembly and the bonding assembly are driven to adjust the pressure when the frame and the membrane electrode are bonded. Through the combined effect of the two aspects, a high-quality product with good flatness and few air bubbles can be prepared in the membrane electrode packaging stage, thereby producing a high-quality fuel cell. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a bonding device for membrane electrode encapsulation provided in an embodiment of this application;

[0027] Figure 2 A schematic diagram illustrating the combination of a driving component and a bonding component provided in an embodiment of this application;

[0028] Figure 3 A schematic diagram of a membrane material conveying method provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of a driving component provided in an embodiment of this application.

[0030] Icons: 10-Lamination device for membrane electrode encapsulation; 100-Lamination assembly; 110-Steel roller; 111-Steel roller body; 112-Steel roller support; 120-Glue roller; 130-Gap; 200-Frame unwinding assembly; 300-Drive assembly; 310-Threaded rod; 311-Adjusting block; 320-Support block; 330-Bearing seat; 400-Base. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this application, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] The membrane electrode assembly (MEA) is a core component of a fuel cell. To improve its structural strength, a frame is typically placed on its surface. Currently, the frame and MEA are mainly integrated using a rolling process (i.e., a pair of oppositely distributed rollers are used as bonding components). However, existing bonding devices for MEA encapsulation have some drawbacks, as follows:

[0038] (1) The rubber roller in the bonding assembly is set downstream of the frame unwinding assembly and used to transport the frame. Due to the poor hardness of the rubber roller, its surface is easily deformed under external force. In addition, the frame is a thin sheet. This setting makes it difficult to flatten the frame during the transport process and also easily causes wrinkles on the frame, resulting in poor flatness of the bonded product.

[0039] (2) The bonding component lacks a driving component, making it difficult to flexibly adjust the roller gap between the two, resulting in the pressure during roller bonding being unable to be flexibly adjusted. However, the frame is relatively thin and is more sensitive to the pressure during bonding. This type of bonding component can easily lead to a large number of air bubbles in the bonded product.

[0040] Based on this, the researchers mainly optimized the structure of the bonding device for membrane electrode encapsulation from the above two aspects, thereby improving the problems of poor flatness and air bubbles after the frame and membrane electrode are bonded. The following is a detailed description of a bonding device for membrane electrode encapsulation and a fuel cell production system of this application.

[0041] See Figure 1 , Figure 2 and Figure 3 In a first aspect, embodiments of this application provide a bonding apparatus 10 for membrane electrode encapsulation, including a bonding assembly 100, a frame unwinding assembly 200, and a driving assembly 300. The bonding assembly 100 includes a steel roller 110 and a rubber roller 120 distributed opposite to each other, with a gap 130 between the steel roller 110 and the rubber roller 120 for passing a membrane material. The frame unwinding assembly 200 is located upstream of the steel roller 110 and is used to transport the frame to the gap 130 via the steel roller 110 for bonding with the substrate. The driving assembly 300 is drivenly connected to the bonding assembly 100 so that the steel roller 110 and the rubber roller 120 can move closer to or further away from each other.

[0042] In this application, on the one hand, by positioning the frame unwinding assembly 200 upstream of the steel roller 110, the frame is conveyed to the bonding gap 130 via the steel roller 110. Since the steel roller 110 has high hardness and flatness, it can effectively support the frame during transport and also assist in flattening the frame, resulting in a product with high flatness after bonding. On the other hand, the driving assembly 300 and the bonding assembly 100 are driven together, allowing the steel roller 110 and the adhesive roller 120 to move closer or further apart. This allows for flexible adjustment of the gap 130 between the steel roller 110 and the adhesive roller 120, enabling flexible adjustment of the pressure during bonding of the frame and the membrane electrode. This reduces the probability of air bubbles forming during bonding (because the frame is relatively thin, it is sensitive to bonding pressure, and improper bonding pressure can easily generate air bubbles). Through these two improvements, the bonding device 10 for membrane electrode encapsulation effectively improves the problems of poor flatness and air bubbles after bonding the frame and the membrane electrode.

[0043] It should be noted that the bonding device 10 for membrane electrode encapsulation is also equipped with some conveying rollers for assisting membrane material transmission. The specific number and position of the conveying rollers can be adjusted according to actual needs.

[0044] It should be noted that, Figure 3 In the middle, the frame starts from the frame unwinding assembly 200, then passes through the steel roller 110 to reach the gap 130, while the membrane electrode moves horizontally under the conveying of the conveying roller.

[0045] As an example, the wrap angle of the border on the steel roller 110 is 45 to 140°, for example, but not limited to any one of the wrap angles of 45°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130° and 140° or any range between two.

[0046] In this embodiment, the adjustable range of the wrap angle of the frame on the steel roller 110 is large (specifically, the wrap angle can be an acute angle, a right angle, or an obtuse angle), which can provide more possible implementation schemes, thereby facilitating the promotion and application of the technical solution of this application.

[0047] It should be noted that the specific size of the wrapping angle can be achieved by adjusting the position of the frame unwinding assembly 200 and the steel roller 110.

[0048] As an example, the wrap angle of the border on the steel roller 110 is 100 to 140°, for example, but not limited to any one of 100°, 110°, 120°, 130° and 140° or any range between two.

[0049] In this embodiment, the wrap angle of the frame on the steel roller 110 is an obtuse angle, which can better support and flatten the frame during the conveying process, so as to obtain a film product with higher flatness after lamination.

[0050] See Figure 1 As an example, the steel roller 110 and the rubber roller 120 are distributed opposite each other in the vertical direction, with the steel roller 110 located above the rubber roller 120.

[0051] In this embodiment, the bonding component 100 is arranged vertically and the steel roller 110 is placed on top, which has the advantages of a more reasonable layout and convenient conveying of the frame and base film.

[0052] See Figure 1 and Figure 2 As an example, the drive assembly 300 and the steel roller 110 are driven together and configured to drive the steel roller 110 toward or away from the rubber roller 120.

[0053] In this embodiment, when the steel roller 110 is positioned above the rubber roller 120, the drive assembly 300 is connected to the steel roller 110 to adjust the gap 130 between the steel roller 110 and the rubber roller 120, which has the advantage of facilitating device assembly and operation.

[0054] See Figure 2 As an example, in the axial direction of the steel roller 110, both ends of the steel roller 110 are driven connected to a drive assembly 300.

[0055] In this embodiment, drive components 300 are provided at both ends of the steel roller 110 along the axial direction, so that the steel roller 110 is subjected to more balanced forces, which helps to improve the overall stability of the device.

[0056] See Figure 2 As an example, the steel roller 110 includes a steel roller body 111 and a steel roller support 112. The two axial ends of the steel roller body 111 are rotatably connected to the steel roller support 112. The steel roller support 112 is connected to the drive assembly 300 so that the steel roller 110 can be raised or lowered by the drive assembly 300, thereby adjusting the gap 130 between the steel roller 110 and the rubber roller 120.

[0057] It should be noted that the rubber roller 120 can be designed with reference to the steel roller 110, the difference being that it does not need to be connected to the drive assembly 300.

[0058] See Figure 1 and Figure 2 As an example, the drive assembly 300 includes a threaded rod 310, a support block 320, a bearing (not shown in the figure), and a bearing housing 330. The threaded rod 310 passes through the support block 320 and is threadedly connected to the support block 320. The support block 320 is supported by the base 400 to support the threaded rod 310. The bearing is housed in the bearing housing 330. One end of the threaded rod 310 passing through the support block 320 is rotatably connected to the bearing housing 330 through the bearing. The end of the bearing housing 330 opposite to the threaded rod 310 is connected to the steel roller 110 (i.e., the end of the bearing housing 330 opposite to the threaded rod 310 is connected to the steel roller support 112).

[0059] In this embodiment, the drive assembly 300 includes a threaded rod 310, a support block 320, a bearing, and a bearing seat 330. Specifically, the threaded rod 310 passes through the support block 320 and is threadedly connected to the support block 320. The support block 320 is supported by the base 400 to support the threaded rod 310. The bearing is housed in the bearing seat 330. One end of the threaded rod 310 passing through the support block 320 is rotatably connected to the bearing seat 330 through the bearing. The end of the bearing seat 330 facing away from the threaded rod 310 is connected to the steel roller 110. That is, the threaded rod 310, the bearing seat 330, and the steel roller 110 are connected as one unit, so that the bearing seat 330 and the steel roller 110 can rise or fall when the threaded rod 310 and the support block 320 rotate relative to each other, thereby adjusting the size of the gap 130 between the steel roller 110 and the rubber roller 120. This screw-like drive method has the advantage of high adjustment sensitivity. At the same time, compared with the drive form of motor, it also has the advantage of lower cost.

[0060] In other possible implementations, the drive component 300 may also be in the form of an electric motor drive or a cylinder drive.

[0061] It should be noted that the form of the base 400 is not limited, as long as it can stably support the entire drive component 300.

[0062] See Figure 1 As an example, the base 400 is a U-shaped base with the bottom of the U-shaped base connected to the ground, part of the drive assembly 300 is housed in the U-shaped base, and the support block 320 is supported on the top of the U-shaped base so that the steel roller 110 connected to the drive assembly 300 is suspended in the air.

[0063] See Figure 4 As an example, in the axial direction of the threaded rod 310, an adjusting block 311 is provided at the end of the threaded rod 310 away from the bearing housing 330, and the orthographic projection of the threaded rod 310 is located within the orthographic projection of the adjusting block 311.

[0064] In this embodiment, an adjustment block 311 with a large cross-sectional size is provided at the end of the threaded rod 310 away from the bearing seat 330, which has the advantage of being easier to operate compared to directly rotating the threaded rod 310.

[0065] As an example, the bearing housing 330 is detachably connected to the steel roller 110.

[0066] In this embodiment, the bearing housing 330 and the steel roller 110 are detachably connected, which has the advantage of facilitating the inspection and replacement of parts.

[0067] It should be noted that the method of detachable connection between the bearing housing 330 and the steel roller 110 is not limited and can be set in accordance with the conventional selection in this field.

[0068] As an example, the bearing housing 330 and the steel roller 110 are bolted together.

[0069] It should be noted that, for any structural or functional units in the bonding device 10 for membrane electrode encapsulation that are not specifically described or limited, they may be configured in accordance with conventional selections in the art.

[0070] In a second aspect, embodiments of this application provide a fuel cell production system, including a membrane electrode assembly bonding device 10 as provided in the first aspect embodiment.

[0071] In this application, the fuel cell production system includes a membrane electrode assembly bonding device 10 as provided in the first aspect embodiment. On one hand, the frame unwinding assembly 200 and the steel roller 110 cooperate to assist in flattening the frame during the frame conveying process. On the other hand, the drive assembly 300 and the bonding assembly 100 are driven to be connected, which can flexibly adjust the pressure when the frame and the membrane electrode are bonded. Through the combined effect of the two aspects, a high-quality product with good flatness and few air bubbles can be prepared in the membrane electrode assembly stage, thereby producing a high-quality fuel cell.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bonding device for membrane electrode encapsulation, characterized in that, include: A bonding assembly comprising opposingly distributed steel rollers and rubber rollers, wherein a gap for the passage of a film material is provided between the steel rollers and the rubber rollers; A frame unwinding assembly, located upstream of the steel roller, is used to transport the frame to the gap via the steel roller for bonding with the substrate; A drive assembly is driven to connect with the bonding assembly so that the steel roller and the rubber roller can move closer to or further away from each other.

2. The bonding device for membrane electrode encapsulation according to claim 1, characterized in that, The wrap angle of the frame on the steel roller is 45 to 140°.

3. The bonding device for membrane electrode encapsulation according to claim 2, characterized in that, The wrap angle of the frame on the steel roller is 100-140°.

4. The bonding apparatus for encapsulating membrane electrodes according to any one of claims 1 to 3, characterized in that, The steel roller and the rubber roller are distributed opposite each other in a vertical direction, with the steel roller located above the rubber roller.

5. The bonding device for membrane electrode encapsulation according to claim 4, characterized in that, The drive assembly is driven to the steel roller and is configured to drive the steel roller toward or away from the rubber roller.

6. The bonding apparatus for membrane electrode encapsulation according to claim 5, characterized in that, Along the axial direction of the steel roller, each of the two ends of the steel roller is driven and connected to one of the drive components.

7. The bonding apparatus for membrane electrode encapsulation according to claim 5, characterized in that, The drive assembly includes a threaded rod, a support block, a bearing, and a bearing housing. The threaded rod passes through the support block and is threadedly connected to the support block. The support block is supported by a base to support the threaded rod. The bearing is housed in the bearing housing. One end of the threaded rod passing through the support block is rotatably connected to the bearing housing via the bearing. The end of the bearing housing opposite to the threaded rod is connected to the steel roller.

8. The bonding apparatus for membrane electrode encapsulation according to claim 7, characterized in that, An adjusting block is provided at the end of the threaded rod away from the bearing seat along its axial direction, and the orthographic projection of the threaded rod is located within the orthographic projection of the adjusting block.

9. The bonding apparatus for membrane electrode encapsulation according to claim 7, characterized in that, The bearing housing is detachably connected to the steel roller.

10. A fuel cell production system, characterized in that, It includes a bonding device for encapsulating membrane electrodes as described in any one of claims 1 to 9.

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